CFR›Title 37›Chapter II›37 CFR Part 223 Citation37 CFR Part 223ContainsSections § 223.1–§ 223.3CorpusDaily eCFRDisplayed edition2026-09-23Last updated2026-09-23 PART 223—OPT-OUT PROVISIONS Sections § 223.1 § 223.1 Respondent's opt-out. § 223.2 § 223.2 Libraries and archives opt-out procedures. § 223.3 § 223.3 Class action opt-out procedures. Authority17 U.S.C. 702, 1510.Source87 FR 13176, Mar. 9, 2022, unless otherwise noted.